GIAC GISP Exam - Topic 3 Question 84 Discussion

Actual exam question for GIAC's GISP exam

Question #: 84
Topic #: 3

[All GISP Questions]

Which of the following encryption algorithms are based on block ciphers?

ARC4

BRC5

CTwofish

DRijndael

Show Suggested Answer

Suggested Answer: B, C, D

by Dino at Apr 08, 2026, 04:23 PM

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18 days ago

Rijndael is the same as AES, right?

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23 days ago

Twofish is definitely a block cipher!

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1 month ago

I'm a bit confused; I thought RC5 was a block cipher too, but now I'm second-guessing myself.

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1 month ago

I feel like I saw a question about block ciphers in practice, and I think both Twofish and Rijndael were mentioned there.

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2 months ago

I remember studying that RC4 is a stream cipher, so it can't be one of the answers.

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2 months ago

I think Twofish and Rijndael are definitely block ciphers, but I'm not sure about RC5.

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